Installed digital editions, downloaded my book. Started reading, then needed to reboot machine. once I rebooted, I tried to open ADE once more, but I again had to "reactivate" the machine... once I try to reactive it I keep n getting stuck (whether I chose to authorize or not authorize the machine is irrelevant) on the same error...

If there is a problem creating this key then E_AUTH_BAD_DEVICE_KEY is the error you'd see.

The key information is stored as an application password in your keychain. Likely causes of failure include denying access to Digital Editions, or locking your user keychain, and not entering their password when prompted.

If you're denying access explicitly to Digital Editions, well don't do that (ha. )

Now, you may not be doing this intentionally. The access permissions on OS X are complicated, so this could be a side effect of some other permission work. You can explicitly grant Digital Editions access to the the keychain item:

I had the same problem: E_AUTH_BAD_DEVICE_KEY, what I did was go to the root account and from there active the application with the data for my adobe account, once activated in root mode, enter our normal mode and activate the Digital Editions following the wizard, this time if it worked perfectly.

Does anybody out there know what to do when you get E_AUTH_BAD_DEVICE_KEY

and my main computer is a PC and my ereader is a Nextbook 2??????

I have more than a dozen books sitting in my borders account but my computer and/or my Borders e-library won't load any of my books - it does not recognize the device.

Lordy, I am sorry that I bought an e-book and I'm sorry that I bought a bunch of e-books from Borders.

I really dislike being defeated by technology. I've spent hours on hold with Borders, can't find anybody to talk to at Adobe and Nextbook 2 is nonexistent. I was able to load the two first books I bought, but every time I power down, the books become corrupted and I've run through all the activations that 4 different emails can possibly do and now I am so frustrated by this, I just can't get past it.

I have a Mac, had the same problem. It turned out that I had Mac's keychain UNLOCKED. When I locked it the digital reader worked. I had no luck with Adobe trying to solve the problem except many hours on the phone waiting for help. Probably won't help you though.

For those of you who the lock and unlock keychain wasn't working here is what I did: all of the forums say to click on digital edition under passwords, mine wasn't there. I reset the keychain to facotry settings where it asked me basically start over. I gave it the same password and locked it and my digital edition worked fine. The person above me is right, adobe was no help with this. At first they told me it was because of my firmware which was not true, there were no updates needed. Another told me I had tried logging in too many times and even went as far as to reset my password, which was unnecessary. Just reset keychain to factory settings. Hope that helps.